Pencil rubbing of a 'Mercedes small worm wheel'.
| Identifier | ExFiles\Box 22\5\ Scan058 | |
| Date | 21th December 1910 guessed | |
| Mercedes small worm wheel | ||
From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).